Fuel-saver and smoke-consumer



I L. D. WEST.

FUEL SAVER AND SMOKE CONSUMER. APnLlcATloN FILED AuG.4. 1919.

1,390,946. Patenasept. 13,1921.`

SHEETS-SHEET I.

LA D. WEST. vFUEL SAVER AND SMOKE CONSUMER.

APPLICATION FILED /IuG.4. 1919.

2 SHEETS-SHEET 2 a citizen of the United States, residin UNITED STATES LEONIDAS DOTY WEST, OF"DENVER, COLORADO.

FUEL-SAVER AND SMOKE-CONSUMER.

Specication of Letters Patent.

Patented Sept. 13, 1921.

Application led August 4,1919. Serial No. 315,188.

To all whom it may concern r Be it known that I, LEoNlnAs DoTY WEST, at Denver, in the county of Denver and tate of Colorado, have invented certain new and useful Improvements in Fuel-Savers and Smoke-Consumers; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to improvements in smoke consuming and fuel saving devices and more particularly to adevice of this character which accomplishes the required end by supplying hot air directly over the fire-bed of furnaces, stoves, etc., the present form of the invention being intended princi ally for furnaces. g

he principal object of the invention is to provide a device of the character described which may be mounted on the furnace door, whichwill supply the hot air to the fire-bed at a point remote from said door,- and nevertheless will permit opening of the door for coaling whenever necessary, this end being attained by thc provision of a projectable and retractable hot air supply neck which is slidablethrough an air heater fixedly carried` on the door. y A further object of the invention is to provide an operating handle for the projectable and retractable neck, carrying means for controlling the amount of air entering the heater. y

A still further object is to make provision for allowing a predetermined amount of air `to enter'the neck at all times, regardless of `the amount enterin the body of the heater.

An additional object is to provide the neck with restricted passa es for admitting the hot air thereto from tie air heater, whereby the travel of the air is retardedto insure maximum heating thereof.

With the foregoing objects in view, the invention resides in Vthe novel construction and arran ement of parts hereinafter described an claimed, reference being made to the accompanying drawings.

Figure 1 is acentral vertical longitudinal section showing my invention attached to a furnace door and illustrating the air supply neck projected for use.

Fig. 2 is a view similar to Fig. 1 but showinfr the neck retracted.

FigB is a horizontal section with parts in plan, as indicated by line 3-3 0f Fig. 1.

Figs. 4, 5 and 6 are vertical transverse sections on the planes indicated by the lines 4.4, 5 5, and 6-6 respectively of Fig. 1.

Fig. 7 is a side elevation of the projectable and retractable neck.

Figs. 2 and 2b are detail sections on the plane of lines 2 2a and 2b 2b of Fig. 2.

In carrying out my invention, I secure an air heater 1 to the coaling door 2 or any other suitable part of a furnace or stove, in such manner as to subject it to the heat from the fire-box; rovide air inlet means for said heater; and sllidably mount an air discharge neck 3 in said heater for projection therefrom to supply the heated air to' the fire-bed at a point rather remote from said heater, making suitable provision not only for projecting said neck, but for retracting it to allow the door to be opened for coaling; and I prefer to provide means for controlling the amountof air entering the heater, and a constantly open passage 5 for continually supplying a quantity of air to said neck.`

The air enterlng the casing 1 is heated by the latter and to insure maximum heating of such air before it is allowed to escape into the neck 3, I provide said neck with one or more restricted air passages 6, and the air `is thus retarded in its passage through the device, to such an extent as to cause heating to the required temperature.

The features briefly described abovel may be incorporated in numerous ways, but in the preferred embodiment of my invention, the construction described below is followed. The heater 1 comprises a cast metal casing which may well be in somewhat the shape of a pyramid as shown, with an opening 7 jat` its smaller end, andattaching flanges 8 at its other end, the latter end being open for communication with the usual damper openings 9 of the coaling door 2. A hood `p ate 1() is located on the exterior of the door and extends over the openings 9, said hood plate and the heaterl being secured in place by bolts 11 as shown. The plate 10 is provided with an air inlet opening 12 which is by preference elongated horizontally as illustrated in Fig. 5, and the air entering this opening, passes through the openings 9 into the heater 1 to be heated by the latter and discharged into the neck 3.

The neck 3 is of tubular form and slides freely through the opening 7, being preferably somewhat flattened on opposite sides and provided with guide ribs 13. One end 0f the neck 3 is provided with any suitable stem 16 and by sliding said rod inwardly,

the neck 3 may be projectedto position the nozzle 14 over the iire-bed, while an outward pull on said rod. will retract said neck in the heater 1 to allow opening of the door 2. I prefer to pivot the handle rod 17 to they stem 1 6 in order that it may swing downwardly when the door is to ,be opened, so as to interfere in no manner with opening ot said door suiiiciently for coaling.

In most forms of the device, the handle rod 17 is .equipped with the valve means lfor controlling the entrance of air through the opening 12, but in some instances, other air control means might be utilized. The means comprises `a damper plate 19 fixedly `carried bythe rod 17 and provided with plug means20 adapted to enter the opening 12 in a non-rotatable manner, to prevent turning of the neck 3 after it is properly projected for use. lVhen the handle is retractedfhowever it may be turned to raise the depending nozzle let, shouldthis` be necessary to open the door. Reinsertion of the plugs 20 inthe opening 12, .when the neck is thusv inverted, will hold it against accidental rotation. :When theV handle is forced inwardly and the neck thus project-ed7 the plate 19 substantially covers the opening 12 andonl-y asmall amount of air is allowed to ,enter the hood 10, between the latter and the plate in question, and throughopenings 21 formed in said plate.

The plate 19 may be secured to the rod 17 in any suitablemanner and I have shown said plate provided with parallel vlugs 22 straddling said rod, one of said lugs being provided with a set screw 23 contacting with the rod. By Vthis arrangement, the pla-te may be adjusted yon' the rod kto-control the amount which the neck 3 may be projected, but maximum projectionvof said neck is controlledby a rib 24 on theinner end of said neck. When the parts are in operative position as seenv for instance'in Fig. 1, the plate 19 substantially coversthe opening 12 and said plate then restson a horizontal ledge 25 which extends outwardly from the hood 10. The lugs 20 Larethen received rather snugly in theopening 12 so that the :neck 3 Vand parts movable Vtherewvith are held against'rotation. `When the rod 17 is pulled 'outwardly to extent which withdraws the lugs 20 from the opening 12, the plate 19 clears the ledge 25 and hence said rod may be rotated to invert the neck 3, which is usually advantageous when opening the door 2 for coaling. Then the door is again closed, or prior to such closing, with the neck 3 and associated parts still in an inverted position, the lugs 2O may be forced part way into the opening 12 which will hold these parts against rotating to assume their normally operative positions, with the nozzle 14: declining rearwardly. It will be seen however that due to the eccentric positioning of the plate 19 on the rod 17, said plate will strike the ledge 25 and limit the inward movement oi the rod and parts connected therewith. Closing ot the opening 12 is thus prevented so that an unusual amount ot iiresh air will enter the lircdaox through the device to prevent excessive smoking after coaling.

Inl addition to the function above assigned to the rib 24C, it serves to prevent the escape of an undesirable amount ot air from the heater 1 around the neck 3, it the plate 1S) is in such a position on the rod 17, as to allow said rib to reach the opening 7. lVhen the neck is pulled back suiiiciently however, to move the rib 24C away from the opening 7, rapid discharge of air is allowed from the heater 1 through said opening 7 due to the flattened sides of the neck.

The device may be operated in the most advantageous manner, according to conditions, but immediately after coaling, it is desirable to allow maximum air to enter through the opening 12. This air impingcs on the highly heat-ed casing and the neck sliding therein and is thus expanded and heated to a high degree, escapingr both through neck 3 and the opening 7. The highly heated and expanded air which passes through the .neck 3 is discharged through the nozzle 14 directly onto the {irebed and mixed with the gas and smoke trom the fresh coal, causing combustion of such gases and consequently consuming the smoke. A suitable time after coahng, the

neck may be fully projected and the opening 12 at the same time covered by the plate 19, but a small amount of air continues to enter as above described. This air is heated as it passes through the device and insures pertectcombustion in the {ire-box.

lVhenever the door 2 is to be opened, the

handle rod 17 is pulled rearwardly and swung downwardly around the pivot 1S, so that the heater 1 and the nozzle 14 will clear the door frame and the handle will not strike the exterior oi the furnace. The door may thus be opened to such an extent as to prevent the device from obstructing the coaling operation. If the heater 1 is attached in suoli manner as to allow the nozzle 14 to normal] project below the dead plate of the door rame, said nozzle may be 1nverted to clear said plate, by turning the handle, but the shape of the late 19 and the ledge 25.Will prevent the reman from again completely projecting the nozzle while in an invertedposition, as before explained. 1

The device is highly eflicient and in every Way desirable,having been given practical and stringent tests; and particular emphasis is laid upon the discharge 'neck sliding through the heater; upon the restricted openings 6; upon the constantly open passage 5; and upon the valve means for not only controlling the amount of air entering the heater, but for permitting projection of the neck 3` to any required extent, according to conditions which may be encountered, such as `the rearward depth of the fire-box, and the width of the dead plate. In all cases where rib 24 is used, it of course controls the maximum amount which the neck may beprojected inwardly. `Since probably the best results are obtainable from the details disclosed, "they may well be followed, but within the scope of the device as claimed, the invention may be embodied in numerous forms other than that shown, and need not in all cases be mounted on a door.

I claim: 1. In a fuel saver and smokecon'sumer, an air heater adapted to be mounted in a stove or furnace in `such manner as to be subjected to heat, said heater having air inlet means, an air discharge neck freely slidable through said heater and projectable therefrom, said neck having an air inlet communicating with the interior of said heater and having a hot air outlet, and means connected with said neck and adapted to extend to the exterior ofthe stove or furnace for projecting and retracting said neck. 1

2. A structure as specified in claim 1, the air inlet of said neck being restricted with respectto the inlet means of said heater to retard the discharge of air `through said neck andinsure maximum heating thereof.

3. A structure asspecified in claim 1, together with a passage for admitting a quantityof air to said neck from the atmosphere, Without passage through said heater.

`4. A structure as specified in claim 1, together `with an extension on said neck adapted to extend to the exterior of fthe stove or furnace when the neck is retracted, and a passage formed through said extension and communicating with the interior of said neck for supplying a quantity of unheated atmos heric air thereto when the neck is retracted).4

5. Astructure as` specifiedinclaim 1, t'ogether :wthx'eansi controlled by said projecting and retracting means for controlling the amount of air entering the heater through said air inlet means thereof.

6. A structure as specified in claim 1, together With a damper plate on said projecting and retracting means for controlling the amount of air entering said heater through said air inlet `means thereof.

7. A structure as specified in claim l, said neck projecting and retracting means comprising an extension on said neck adapted to extend to the exterior of the stove or furnace through said air inlet means of the heater, and a handle rod connected with said extension for projecting and retracting said neck, and means mounted on said handle rod for controlling the entrance of air through said air inlet means 8. A structure as specified in claim 1, said neck projecting and retracting means comprising an extension on said neck adapted to extend to the exterior of the stove or furnace through said air inlet means of the heater, and a handle rod connected with said extension for projecting and retracting said neck, and a damper plate secured on said handle rod for controlling the entrance of air through said air inlet means.

\ 9. A structure as specified in claim 8, together with plug means on said damper plate for reception in said air inlet means of the heater.

10. A structure as specified in claim 7, said air controlling means being adjustable along said handle rod to limit the projection of said neck.

11. `A structure as specified in claim 8, said damper plate being adjustable along said handle rod to limit the projection of said neck, anda set screw for locking said plate in adjusted position.

12. A structure as specified in claim l, said neck having a depending outlet end; the means for projecting and retracting said neck serving also for rotating it when de- 110 sired to elevate said discharge end. means on said projecting and retracting means for controlling the entrance of air to the heater, and means coacting with said air controlling means to prevent closing of the latter 115 While'said neck is inverted from its normal position.

13. A` structure as specified in claim l, said neck havinga depending outlet end; the projecting and retracting means for said 120 neck comprising an extension on said neck adapted to project to the exterior of the stove or furnace through an air inlet means of said heater and a handle rod connected with said extension and adapted for project- 125 ing and retracting said neck and for inverting it to elevate said outlet end; a damper plate=mounted on said handle rod for, controlling thelentrance of air through said air inlet means and means coacting with said 130 .ving it to elevate said outlet end, a damper plate mounted-on said handle rod for contro-lling the entrance of air through said air `inlet opening, said rod being connected eccentrically with said plate, and a relatively fixed lug coacting with said plate to prevent closing of the latter While the neck is vinverted from its normal position.

15. The combination with a furnace door having a plurality ofV openings, of an air heating casing at the inner side of said door communicating at one end With said-openings and having in its other end an opening, a `tubular neckv slidable through said last named opening and having a restricted passage at one end establishing communication between its interior and said casing, the otherend ofsa-id nec-k having a hot air outlet, Van extension projecting from said first named end of said neck through one of said air'inlet openings, a hood on the exterior of said door extending over said air inlet openings and .being itself provided with an air inlet opening through which said extension projects, and a handle connected with said extension for projecting and retracting said neck.

16. The combination With a furnace door having a plurality of openings, of an air heating casing at the inner side of said door` communicating at one end'with said openings andhaving in its other end an opening, a tubular neck slidable through said last named opening andY having a restricted passage at one lend establishing communication between 'its interior and said A casing, the other end of said neck having a hot air outlet, an extension projecting from said lirst l'named end-ofv said neck through one of said air inlet openings, a hood on the exterior of said door extending over said air inlet openings -and beingitself, provided vvith an air inlet opening through which said extension projects, a handle connected VWithjsaid extension forprojecting and retracting said neck,and means on said handle for controlling theentrance of air through the opening ofsaid hood. j

l 17. The' combination with a furnace door 'having arplurality of openings, of an air heating casingat the inner side of said door communicating at one end with said openings and having in its other end anopening, a tubular neck slidable through said .passage at one end establishing communication between its interior and said casing, the other end of said neck having a hot air outlet, an extension projecting from said rst. named end of said neck through one of said air inlet openings, a hood on the exterior of said door extending over said air inlet openings and being itself provided with an air inlet opening through which said extension projects, a handle rod connected with the outer end of said extension for projecting and retracting said neck, and a damper plate on said handle rod for controlling the entrance of air through the inlet opening of said hood.

18. The combination with a furnace door having a plurality of openings, of an air heating casing at the inner side of said door communicating at one end With said openings and having in its other end an opening, a tubular neck slidable through said last named opening and having a restricted passage at one end establishing communication between its interior and said easing. the other end of said neck depending and forniing a hot air outlet, an extension projecting from said first named end of said neck through one of said air inlet openings. a. hood on the exterior of said door extending over said air inlet openings and being itself provided with an air inlet opening through Which said extension projects` a handle connected With said extension for projecting, and retracting said neck and for inverting the same to elevate its outlet end; and coactmeans on said hood andhandle to arevent maximum projection of said neck Wlhilc in an inverted position.

19. The combination with a furnace door having a plurality of openings, of an air heating casing at the inner side of said door communicating at one end with said openings and'having in its other end an opening, a tubular neck slidable through said last named opening and having a restricted passage at one end establishing communication between its interior and said casing. the other end of said neck depending and forining a hot air outlet, an extension projecting from said first named end of said neck through one of said air inlet openings, a hood on the exterior of said door extending over said air inlet openings and being itself provided With an air inlet opening through which said extension projects, a handle connected with said extension for projecting, and retracting said neck and for inverting the same to elevate its outlet end, means on said handle for controlling the entrance of air through the inlet opening of said hood, and means on said hood coacting With saidv air controlling means to prevent closing of the latter While said neck is inverted.

20. The combination with a furnace door having a plurality of openings, vof an air heating casing at the inner side of said door communicating at one end with said openings and having in its other end an opening, a tubular neck slidable through said last named opening and having a restricted passage at one end establishing communication between its interior and said casing, the other end of said neck depending and forming a hot air outlet, an extension projecting from said first named end of said neck through one of said air inlet openings, a hood on the exterior of said door extending over said air inlet openings and being itself rovided with an air inlet opening throng which said extension projects, a handle rod connected with said extension for projecting, and retracting said neck for inverting the same to elevate its outlet end; a damper plate secured on said rod for controlling the entrance of air through the inlet opening of said hood, and a lug carried by said hood and coacting with said plate to prevent closing of the latter While said neck is inverted.

21. In a fuel saver and smoke consumer, an air heating casing adapted to be mounted in a Stove or furnace in such manner as to be subjected to heat, said casing having air inlet means and an outlet opening, a tubular neck slidable freely through said opening, said neck having means for admitting air to its interior from said casing, and also having air discharge means, means operable from the exterior' of the stove or furnace for projecting and retractingr said neck, and valve means on said neck Within said airU heating casing adapted to normally seal the nopening around the neck, said opening however permitting the direct escape of air from said casing when said neck is Withdrawn sufficiently to space said valve means from the opening.

In testimony whereof I have hereunto set my hand.

LEONIDAS DOTY WEST. 

